import React from 'react'

function Index() {
  const app=[4,4,1,1,1,2,2,2,2,3];
  const useApp=[...new Set(app)].sort((a,b)=>a-b)
  console.log(useApp);
  
  return (
    <div>
      分类
    </div>
  )
}

export default Index
